Route on-time record
LAS to SLC: most on-time flights and the best time to fly
Las Vegas (Harry Reid International Airport) to Salt Lake City (Salt Lake City International Airport). 3,754 nonstop flights in Jun 2025 to May 2026, 83% arrived within 15 minutes and 0.7% were cancelled. The most reliable flight number was Delta 2674 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
LAS → SLC
Las Vegas to Salt Lake City: 3,754 nonstop flights a year
On time (12 months)
83%
Cancelled
0.7%
avg delay 11 min
Best time to leave
Before 9 AM
93% on time vs 65% after 9 PM
Most reliable airline
Frontier
87% chance on time
Lowest nonstop fare seen in the next two months: $175 (Frontier 3016 on 2026-10-21). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 2674
6:00 AM → 8:30 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
95%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.3%
- Avg arrival delay
- 5 min
- Arrived on time 95% of the time (364 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; After 9 PM: 65%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Strong track record · 364 flights
Find Delta 2674 fares Opens this date on Aviasales#2 · Frontier 3016
7:00 AM → 9:30 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.8%
- Avg arrival delay
- 6 min
- Arrived on time 94% of the time (119 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; After 9 PM: 65%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Moderate track record · 119 flights
Find Frontier 3016 fares Opens this date on Aviasales#3 · Delta 1697
10:22 AM → 12:50 PM1h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Delta 1622; its record covers all of them.
91%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 91% of the time (85 flights, Jun 2025 to May 2026).
- Never cancelled in 85 scheduled flights.
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 85 flights
Find Delta 1697 fares Opens this date on Aviasales#4 · Delta 1690
7:05 PM → 9:33 PM1h 28m nonstop
Local times, typical schedule. Last flown 2026-05-06.
88%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 91% of the time (80 flights, Jun 2025 to May 2026).
- Never cancelled in 80 scheduled flights.
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Moderate track record · 80 flights
Find Delta 1690 fares Opens this date on Aviasales#5 · Frontier 2576
5:13 PM → 7:45 PM1h 32m nonstop
Local times, typical schedule. Last flown 2026-04-13.
88%
chance on time
- On time (history)
- 93%
- Cancelled
- 1.1%
- Avg arrival delay
- 7 min
- Arrived on time 93% of the time (91 flights, Jun 2025 to May 2026).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Moderate track record · 91 flights
Find Frontier 2576 fares Opens this date on Aviasales#6 · Southwest 245
8:20 AM → 10:50 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-29.
88%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 91% of the time (23 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; After 9 PM: 65%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 245 fares Opens this date on Aviasales#7 · Frontier 4696
3:21 PM → 6:00 PM1h 39m nonstop
Local times, typical schedule. Last flown 2026-05-04.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 88% of the time (75 flights, Jun 2025 to May 2026).
- Never cancelled in 75 scheduled flights.
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 75 flights
Find Frontier 4696 fares Opens this date on Aviasales#8 · Southwest 1328
10:10 AM → 12:40 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-04-06. Same departure also flew as Southwest 967; its record covers all of them.
85%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 87% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find Southwest 1328 fares Opens this date on Aviasales#9 · Frontier 1508
6:30 AM → 9:00 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-18.
85%
chance on time
- On time (history)
- 85%
- Cancelled
- 2.8%
- Avg arrival delay
- 12 min
- Arrived on time 85% of the time (208 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; After 9 PM: 65%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Strong track record · 208 flights
Find Frontier 1508 fares Opens this date on Aviasales#10 · Southwest 3731
12:20 PM → 2:50 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-27.
85%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 100% of the time (16 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 3731 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Frontier Airlines87%
502 flights · 89% on time as flown · 1.4% cancel
- Delta Air Lines85%
1,711 flights · 86% on time as flown · 0.6% cancel
- Spirit Airlines79%
91 flights · 76% on time as flown · 1.3% cancel
- Southwest Airlines77%
1,443 flights · 77% on time as flown · 0.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
897 flights · avg delay 4 min
- 9 AM to noon90%
615 flights · avg delay 7 min
- Noon to 3 PM81%
731 flights · avg delay 12 min
- 3 to 6 PM75%
783 flights · avg delay 18 min
- 6 to 9 PM77%
548 flights · avg delay 14 min
- After 9 PM65%
180 flights · avg delay 23 min
Best day: Saturday (87%). Worst: Sunday (76%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft57%
- Airline (crew, maintenance, boarding)31%
- Air traffic control and airport volume12%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
LAS to SLC questions
- What time of day is best to fly LAS to SLC?
- Before 9 AM: 93% of flights arrived on time, against 65% for departures after 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from LAS to SLC?
- Frontier, with a season-adjusted 87% chance of operating and arriving on time over 502 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on LAS to SLC?
- July (73% on time); the best was November (89%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from LAS
- SLC to LAS (return)
- LAS to LAX 79%
- LAS to DEN 77%
- LAS to SAN 68%
- LAS to PHX 78%
- LAS to SFO 66%
- LAS to SEA 82%
- LAS to ORD 77%
- LAS to DFW 81%
- LAS to ATL 84%
- LAS to SNA 82%
- LAS to SMF 79%
- LAS to BUR 80%
Live status: FAA delays and ground stops